Hydraulic Pro-Lift bottle jacks feature a steel lifting saddle cleated for load gripping power. The extension screw adjusts to accommodate work height. A patented bypass device protects against over-pumping. Heat-treated critical stress areas ensure long lift performance. Carrying handle for 8, 12 and 20 ton models. Meets or exceeds ANSI/PALD (American National Standards Institute/Portable Automotive Lifting Devices) standards. Ideal for auto, truck service, farm and shop use.